Taxia e agregação não local em um sistema planta herbívoro

• Ano de defesa: 2013
• Autor(a) principal: Silva, Otonio Dutra da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Matemática; UFSM; Programa de Pós-Graduação em Matemática
• Palavras-chave em Português: Dispersão não local; Fitotaxia; Agregação; Múltiplas escalas; Non-local dispersal; Herbivore-taxis; Aggregation; Multiple scale; CNPQ::CIENCIAS EXATAS E DA TERRA::MATEMATICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/9984

The dispersal of herbivorous insects in large plantations must be modelled by taking into account many behavioral aspects of the individual movement. The insect ability to search for (and find) better plant quality are of fundamental importance to the development of a mathematical model. Also, many insects present an aggregation tendency which seems to be a population strategy to optimize harvesting and survival. In the present work, in order to analyze the spatio-temporal dynamics of an insect population, both kinds of behaviour are microscopically described by a Coupled Map Lattice model which includes a short range taxis for plant quality to a long range taxis with respect to their own population density. We observed, in the macroscopic scale, stable and dynamical heterogeneous spatial pattern formation when the difference between the scales is significant.